US3086838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying gaseous mixtures from acidic compounds
Assignee: Vetrocoke SpA
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Filing: 1958-10-28
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Granted: 1963-04-23
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Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Giammarco Giuseppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:41
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526; C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/124; C10K1/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A METHOD OF PURIFYING A GASEOUS MIXTURE CONTAINING ACIDIC COMPOUNDS TO REMOVE SAID COMPOUNDS THEREFROM BY SCRUBBING THE GASEOUS MIXTURE WITH AN ALKALINE ABSORBING SOLUTION CONTAINING SODIUM CARBONATE, AND INCLUDING AN ARSENATE AND AN ARSENITE, WHEREIN THIOSULPHATES ARE FORMED IN THE ABSORBING SOLUTION, THE IMPROVEMENT CONSISTING OF HEATING SAID THIOSULPHATES AND AT LEAST THE NORMALLY SOLID COMPONENTS OF SAID SOLUTION ASSOCIATED THEREWITH TO A TEMPERATURE OF AT LEAST 200*C. TO EFFECT DECOMPOSTION OF SAID THIOSULPHATES, SAID SOLUTION CONTAINING AN ARSENATE AND AN ARSENITE AND SAID HEATING BEING EFFECTED IN THE PRESENCE OF SAID ARSENATE AND ARSENITE.
Claim 2
Dependent Claim
97 words
IN A METHOD OF PURIFYING A GASEOUS MIXTURE CONTAINING ACIDIC COMPOUNDS TO REMOVE SAID COMPOUNDS THEREFROM BY SCRUBBING THE GASEOUS MIXTURE WITH AN ALKALINE ABSORBING SOLUTION CONTAINING SODIUM CARBONATE, AND INCLUDING AN ARSENATE AND AN ARSENITE, WHEREIN THIOSULPHATES ARE FORMED IN THE ABSORBING SOLUTION, THE IMPROVEMENT CONSISTING OF HEATING SAID THIOSULPHATES AND AT LEAST THE NORMALLY SOLID COMPONENTS OF SAID SOLUTION ASSOCIATED THEREWITH TO A TEMPERATURE OF AT LEAST 200*C. TO EFFECT DECOMPOSTION OF SAID THIOSULPHATES, SAID SOLUTION CONTAINING AN ARSENATE AND AN ARSENITE AND SAID HEATING BEING EFFECTED IN THE PRESENCE OF SAID ARSENATE AND ARSENITE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |